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Added cross-compiling instructions to README.md

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Trevor Robinson 2012-09-06 19:16:57 -05:00
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@ -90,6 +90,23 @@ See the [installation instruction](https://github.com/xerial/snappy-java/blob/de
A file `target/snappy-java-$(version).jar` is the product additionally containing the native library built for your platform.
## Cross-compiling for other platforms
The Makefile contains rules for cross-compiling the native library for other platforms so that the snappy-java JAR can support multiple platforms. For example, to build the native libraries for x86 Linux, x86 and x86-64 Windows, and soft- and hard-float ARM:
$ make linux32 win32 win64 linux-arm linux-armhf
If you append `snappy` to the line above, it will also build the native library for the current platform and then build the snappy-java JAR (containing all native libraries built so far).
Of course, you must first have the necessary cross-compilers and development libraries installed for each target CPU and OS. For example, on Ubuntu 12.04 for x86-64, install the following packages for each target:
* linux32: `sudo apt-get install g++-multilib libc6-dev-i386 lib32stdc++6`
* win32: `sudo apt-get install g++-mingw-w64-i686`
* win64: `sudo apt-get install g++-mingw-w64-x86-64`
* arm: `sudo apt-get install g++-arm-linux-gnueabi`
* armhf: `sudo apt-get install g++-arm-linux-gnueabihf`
Unfortunately, cross-compiling for Mac OS X is not currently possible; you must compile within OS X.
## Miscellaneous Notes
### Using snappy-java with Tomcat 6 (or higher) Web Server